Saw support and guide



April 21, 1925. 1,534,405.

G. N. LYON s Aw SUPPORT .AND GUIDE FiledAug. 11, 1923 Patented ,Apr. 21, 1925.

rmyms; omxgon, ASSIGNQR 0E onn xmnnme WILLIAM B.

VSUIJL IVAN 9F @OWEBSQ 0333603911.

sAw 8 m AND mime.

mm m 4w h su i 1 1% we, 1 3mm- Be i knewli the, N- L -Qmit en f th Ilh ql States; 'lfifii z g hh POWQIS, in the (puppy Of C963 stem of Ore ha e n en ed q r eih new d ef l mp vement 111 SW Shemte and G es o w ich he'fh' lowi gi i a hh a i n,

T is nv n on elwe he eh phl'ts nd uid for c oss. 91W ews o th hy e hv n s und utm e h In ca e W ere a allen 1 s Sup e solely at i and by 9th e -e, Lne hlit e n the em-d h M 6 dieh ente he re1,1shrille hh i f' S emtioxi, the said Support or ml'1m c leyel vqterbeg either mprw s i ib 1 nea sfeetem 'Pherezfiere, it is, 1118 Qf time qbgees qf hhs;

pnesent imen nut P ev de; shpppr 9 a cross out :saw upon which the hQ-h 92 9 b 0f e sa my be e sted and by 1 the "blade will heiwgqiclepl 1n :ighe sew m g ing designed to: be fixed with irelatien he the log m be out in su h mann tha hh bla will be supported for 'lefiiprqeaybiege b epeaph the log. h h "Anotherebi t hi he nven n W $9 constriuefi the vdevicewtflglefe it will ppgv i ele-jfer exbremefreedom i mewmepfe ef the saw although at @the same time effectp lglly 5gp;- porting the saw and guiding it lts I'BQIP- men/tony movement.

ne hem' abject oi h inyenhiqh 1& he. P 39 wide a saw support of the class, memmned wh ch will be subst n a w ene me i on, inexpensive t en rfh tur and; WW liable, whereby ve l rh dfii' ro gh ag 1 0 hi h the suppo t will e is bj t da there will'beno ifikelihwd 0i di szprmngegnene t the pages cump isizn he #THPPQIQ W1 1 E11 m H -m n impo e upe flm emd peg-eta,

Under abhe emiih one .wbeve x' ie heg he, that eia: to any, he 19s 1119 he mt. 1.12:-

mhsilblei h le in wo a;

ehown h i prl hf the draw M p m; it m y be ete esl ha mgt ee ilw he e 1 e 1 m th L g hi warm PmS- h l xp ne Will' Wer- A directiqn frgm theleg he 'eilppprt, ,the JlPPQ I g' @119 g idi g" memh lrp h d'Q-J Vice, end therefore the present "0111 has s a f t e impo t t obj t h 50, e9 1 s triiet the parts that theeqstefln ingbef t be t be drfien downwardly mteia leg" and the dev e h m l x'e l h' a, wr m neh Y C AS i i ich e a ve he m th eni eh Q hPr-i suppoht p hpei Wh ph 1s 1199 t e a a m ans is; hqlql ing th SUPWW ih Yh 'iQl l; adjuethiehp longitudinally 1 0315 the an n his onnectibn the nvent bn 'fiir ll t mplafi he Pr i on of mem W y e su port PI PQI' my he eadily e A from the bar the time tli elpa i i3 fiedr e int the l g's t; bfilfi 'e iif 9 cted t9 zi ny shbcke PP Eh QmhQ Y:

the bar, "it will 1101b be si whie wo ld be. r gnsm pms m 1 1; th h r th i s hl hli ihg sim ings i uwl s a si e ev h e afidf-hhe unde zwhen 01' aw luppsm em wm e the wh 'h i g 11 1 h h cu ensihhe' -g h Shh m h 133m 2 is a detail tmngveyse eegzt ziqnel View oki ighe of Fgiglire 1 loplgilgg" 11 the di'reptjbn indicated by the a lqrows the sewsie h ih She-Whip i q dash lin s;

per i of he u hw e a pm heipg stme aleh ji h il de e evat n 0i e bar would be driven into the log in sub stantially the inclined position shown in the said figure, but under some conditions which will be encountered, it may become necessary to drive the bar into the log in a more or less downward direction. In any event, when the bar has been driven into the log, it will be securely anchored in place and will constitute a firm support for the sup port proper which is mounted thereon and will presently be descr bed. The bar 1 is preferably flat sided and has its upper and lower edges transversely rounded as illustrated in Figure 2 of the drawings, and for a purpose which will be hereinafter pointed out, the bar is formed in each edge with a longitudinally extending series of notches 4 having abruptly inclined walls 5 located next adjacent the butt end of the bar. Each edge of the bar is likewise formed with a longitudinal series of notches 6 preferably alternating with the notches 4 and having abruptly inclined walls '7 located next adjacentthe entering end 2 of the bar.

The support proper, heretofore referred to, comprises a follower indicated in general by the numeral 8, and the said follower comprises a body member 9 which is formed with an opening 10 extending therethrough and of a contour and dimensions to slidably receive the'sustaining bar 1. At its under side, the body member 9 is provided with a downward extension or boss indicated by the numeral 11, and this boss is formed with a threaded socket 12 into which is fitted the threaded reduced end 13 of a stub shaft 14. The shoulder formed by reducing and threading the end of the shaft, and indi cated by the numeralv 15, abuts squarely against the side face of the boss 11 as clearly shown in Figure 2 of the drawings, and the shaft is in this manner mounted in a most substantial way upon the follower 8. The oppos te end of the shaft is likewise reduced and threaded as indicated by the numeral 16, and fitted onto this end of the shaft and resting at one face against the shoulder 17 formed by reducing the shaft at this end, is a bearing disc 18 held in place against the shoulder by a nut 19 threaded onto the portion 16 of the shaft. The numeral 20 indicates a saw blade supporting roller which 'is formed ax ally with a bore 21 re- .ceiving the intermediate portion of the shaft 14, and at the opposite end of the bore, the roller is formed in its side faces with ball races 22 and 23, bearing balls'24 and 25 being arranged in the races 22 and 23, re spectively, The races are so formed that the bearing balls 24 and 25 will contact the circumferential surface of the intermediate portion of'the shaft 14, and will likewise project slightly beyond the plane of the opposite side faces of the roller. The face of the body 9 or the follow 8 which i located next adjacent the roller 20 is formed with a shallow ball race 26 in which the bearing balls 24 may travel, and in a similar manner the balls 25 travel against the inwardly presented face of the bearing disc 18. In this manner the roller 20 is supported for free rotation and there is no likelihood of its binding against any proximate part of the structure. In order that the follower 8 may be held at various positions of adj ustment longitudinally of the bar 1, thebody member 9 is formed at its upper side with spaced cheek pieces 27 between which is pivoted, as at 28, a pawl 29, the engaging end 30 of which pawl is designed to enter the notches 4 or 6 as the case may be. A leaf spring 31 is secured at one end in or to the upper side of the body member 9 and extends between the cheek pieces 27 and engages at its free end against a. fiat surface or shoulder 32 formed upon the butt end of the pawl 29 forwardly of the pivot 28, the spring being so arranged as to exert pressure in an outward direction against the shoul der and thereby hold the toothed end of the pawl in engagement with the upper edge of the sustaining bar 1. The said butt end of the pawl is likewise formed with a shoulder 33 which occupies a plane at right angles to the shoulder 32 and is extended in a forward direction and by reference to Figure 3 of the drawings, it will be observed that the pawl 29 may be swung from the full line or active position illustrated in said figure to the dotted line or inactive position and held in either of the two positions, the spring in the first instance engaging against the shoulder 32, and in the latter instance against the shoulder 33. By so forming the butt end of the pawl and arranging the spring for coaction with the shoulders 32 and 33 selectively, the pawl may be swung up to the dotted line position and so held while the support proper is being slid onto or off from the sustaining bar.

In order that-the saw blade may be guided in its backward and forward motion during the sawing operation, the roller 20 is provided with one or more circumferential grooves 34, and these grooves may if desired be of different widths so as to accommodate saw blades of different thicknesses, or they may all be of the same width.

In using the device, the pawl 29 is swung upwardly upon the pivot 28 from the full line position to the dotted line position shown in Figure 3. and the supporting device proper is slid off from the sustaining bar'l. The bar is then driven into the log, preferably in the position shown in Fig. 1 of the drawings, in which position it will be inclined downwardly from the log. The supporting device proper is then slid onto the bar at the butt end thereof and the pawl 29 is'swung down to assume the full line position above referred to. The said memso as to cut into the log. As the blades cut into the log, the member Sis from time to time shifted upwardlv along the bar 1 as the out becomes deeper. Should it be foundim practicable to drive the bar 1 into the log in the position shown in Figure 1 and should it therefore become necessary to drive the same into the log in a more or less downward direction. the member 8 will be slid from the bar 1, reversed end for end, and again slid onto the bar. In the firstdescribed manner of using the device, the pawl 29 will engage in the notches 4; and in the latter instance just referred to, the said pawl will, in its reversed position, engage in the notches 6,

is claimed as new is:

In a device of the class described, a bar having an end to be driven into a log to be sawed, a member slidable along the said bar and removable therefrom and reversible end for end, the bar having a series of notches in one longitudinal edge presented in one di- 25 Having thus described the invention, what i rection, and another series of notches presented in the opposite direction, a pawl upon the said member engageable with the notches of one series when the member is apphed to the 133F111 one position, the pawl being engageable with notches of the other series when the said member is applied in an endwise reversed position, and means upon the said member for supporting asaw blade for reciprocation.

In testimonyvwhereof I afiix my signature.

GEORGE N. LYON. a 3, 

